Blown cellulose in soffits now causing leak
I had blown cellulose installed in my attic last week with sprayfoam sealing of the top plate and Styrofoam baffles placed between each rafter. I also had dense-packed cellulose installed in between each stud in the wall below. We have now had significant snow fall and freezing rain, and today I noticed a leak from the top of a window casing in the wall that was dense-packed. When I went up on a ladder to look at the gutter, I found a significant amount of frozen cellulose protruding from a gap between the slate roof tiles and the sheathing underneath. It appears that this cellulose was wicking water up into the soffit and/or wall, which was then leaking out through the window casing inside. The insulation contractor came back and used a propane torch to melt the frozen cellulose and pull it out where it was protruding, which will hopefully stop the capillary action that seems to be pulling water in from the gutter. However, the soffits appear to be filled with cellulose that is poking out through the vents, and which can be easily seen from the outside of the house. I am also able to reach up through and behind the gutter and under the sheathing and can feel a large amount of wet cellulose. The contractor is saying that there must have been a problem with the roof that allowed the cellulose to communicate to the exterior in this way. He is also saying that there is no need to remove the wet cellulose because it is treated with borate and will not mold. My questions are:
-Is there any reason to have the soffit and or wall opened up to remove the now drenched cellulose?
-Could this have happened if the soffit vents in the attic were not adequately blocked (they did block them with fiberglass)
-If the baffles were not properly installed, or
-If the top plate whas not adequately sealed with spray foam?
-Could this have been caused by a pre-existing roofing problem, and if so, was there any way to know this before the insulation installation?
Posted Feb 2, 2011 4:26 PM ET
Edited Feb 2, 2011 4:27 PM ET
Other Questions in Energy efficiency and durability